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542 . 2023算法班第一階段認證考_pC
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Algo
Algo23_a_exam
Description
題本 PDF
Input Format
Output Format
Hints
Problem Source
NEOJ Problem 856
Subtasks
No.
Testdata Range
Constraints
Score
1
20, 41, 62~64
0
2
0~20
20
3
21~41
20
4
0~64
30
5
0~94
30
Testdata and Limits
No.
Time Limit (ms)
Memory Limit (VSS, KiB)
Output Limit (KiB)
Subtasks
0
1000
524288
65536
2
4
5
1
1000
524288
65536
2
4
5
2
1000
524288
65536
2
4
5
3
1000
524288
65536
2
4
5
4
1000
524288
65536
2
4
5
5
1000
524288
65536
2
4
5
6
1000
524288
65536
2
4
5
7
1000
524288
65536
2
4
5
8
1000
524288
65536
2
4
5
9
1000
524288
65536
2
4
5
10
1000
524288
65536
2
4
5
11
1000
524288
65536
2
4
5
12
1000
524288
65536
2
4
5
13
1000
524288
65536
2
4
5
14
1000
524288
65536
2
4
5
15
1000
524288
65536
2
4
5
16
1000
524288
65536
2
4
5
17
1000
524288
65536
2
4
5
18
1000
524288
65536
2
4
5
19
1000
524288
65536
2
4
5
20
1000
524288
65536
1
2
4
5
21
1000
524288
65536
3
4
5
22
1000
524288
65536
3
4
5
23
1000
524288
65536
3
4
5
24
1000
524288
65536
3
4
5
25
1000
524288
65536
3
4
5
26
1000
524288
65536
3
4
5
27
1000
524288
65536
3
4
5
28
1000
524288
65536
3
4
5
29
1000
524288
65536
3
4
5
30
1000
524288
65536
3
4
5
31
1000
524288
65536
3
4
5
32
1000
524288
65536
3
4
5
33
1000
524288
65536
3
4
5
34
1000
524288
65536
3
4
5
35
1000
524288
65536
3
4
5
36
1000
524288
65536
3
4
5
37
1000
524288
65536
3
4
5
38
1000
524288
65536
3
4
5
39
1000
524288
65536
3
4
5
40
1000
524288
65536
3
4
5
41
1000
524288
65536
1
3
4
5
42
1000
524288
65536
4
5
43
1000
524288
65536
4
5
44
1000
524288
65536
4
5
45
1000
524288
65536
4
5
46
1000
524288
65536
4
5
47
1000
524288
65536
4
5
48
1000
524288
65536
4
5
49
1000
524288
65536
4
5
50
1000
524288
65536
4
5
51
1000
524288
65536
4
5
52
1000
524288
65536
4
5
53
1000
524288
65536
4
5
54
1000
524288
65536
4
5
55
1000
524288
65536
4
5
56
1000
524288
65536
4
5
57
1000
524288
65536
4
5
58
1000
524288
65536
4
5
59
1000
524288
65536
4
5
60
1000
524288
65536
4
5
61
1000
524288
65536
4
5
62
1000
524288
65536
1
4
5
63
1000
524288
65536
1
4
5
64
1000
524288
65536
1
4
5
65
1000
524288
65536
5
66
1000
524288
65536
5
67
1000
524288
65536
5
68
1000
524288
65536
5
69
1000
524288
65536
5
70
1000
524288
65536
5
71
1000
524288
65536
5
72
1000
524288
65536
5
73
1000
524288
65536
5
74
1000
524288
65536
5
75
1000
524288
65536
5
76
1000
524288
65536
5
77
1000
524288
65536
5
78
1000
524288
65536
5
79
1000
524288
65536
5
80
1000
524288
65536
5
81
1000
524288
65536
5
82
1000
524288
65536
5
83
1000
524288
65536
5
84
1000
524288
65536
5
85
1000
524288
65536
5
86
1000
524288
65536
5
87
1000
524288
65536
5
88
1000
524288
65536
5
89
1000
524288
65536
5
90
1000
524288
65536
5
91
1000
524288
65536
5
92
1000
524288
65536
5
93
1000
524288
65536
5
94
1000
524288
65536
5
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